basic skeleton rewritten in reactjs

public/node_modules/jsx-ast-utils/lib/values/expressions/LogicalExpression.js

@@ -0,0 +1,33 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = extractValueFromLogicalExpression;
+/**
+ * Extractor function for a LogicalExpression type value node.
+ * A logical expression is `a && b` or `a || b`, so we evaluate both sides
+ * and return the extracted value of the expression.
+ *
+ * @param - value - AST Value object with type `LogicalExpression`
+ * @returns - The extracted value converted to correct type.
+ */
+function extractValueFromLogicalExpression(value) {
+  // eslint-disable-next-line global-require
+  var getValue = require('.').default;
+  var operator = value.operator,
+      left = value.left,
+      right = value.right;
+
+  var leftVal = getValue(left);
+  var rightVal = getValue(right);
+
+  if (operator === '&&') {
+    return leftVal && rightVal;
+  }
+  if (operator === '??') {
+    // return leftVal ?? rightVal; // TODO: update to babel 7
+    return leftVal === null || typeof leftVal === 'undefined' ? rightVal : leftVal;
+  }
+  return leftVal || rightVal;
+}